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Data: Numbers of 4 ray species caught in 2137 Irish Sea trawls, 1994 to 2014
Description
2244 capture events of cuckoo, thornback, spotted and blonde rays in the Irish Sea from 1994 to 2014 by the ICES IBTS, including explanatory variables: Length Per Unit Effort in that area by the commercial fishery, fishing effort by same, depth, temperature, distance to shore, and current speed at the bottom.
Usage
data(samples)
Format
A data frame with 2244 rows and 14 variables:
- Survey_StNo_HaulNo_Year
Index column of combined Survey number, station number, haul number, and year
- Latitude
Decimal latitudes in the Irish Sea
- Longitude
Decimal longitudes in the Irish Sea
- Depth
Metres, decimal
- Temperature
Degrees, decimal
- Salinity
PPM
- Current_Speed
Metres per second at the seabed
- Distance_to_Shore
Metres, decimal
- F_LPUE
Commercial fishery LPUE in Kg/Hr
- Effort
Irish commercial beam trawler effort 2012
- Cuckoo
Numbers of juvenile cuckoo rays caught, standardised to 1 hour
- Thornback
Numbers of juvenile thornback rays caught, standardised to 1 hour
- Blonde
Numbers of juvenile blonde rays caught, standardised to 1 hour
- Spotted
Numbers of juvenile spotted rays caught, standardised to 1 hour
Author(s)
Simon Dedman, simondedman@gmail.com
Source
http://oar.marine.ie/handle/10793/958